PI3USB3031ZNEX

Overview

The PI3USB3031ZNEX is a 2-channel, 1:3 multiplexer integrating a high-speed Mobile High-Definition Link (MHL) or Mobility Display Port (MyDP) switch and two USB 2.0 High-Speed switches within a single package. It operates with a supply voltage range of 1.8V to 5.5V and features overvoltage tolerance on all I/O pins up to 5V without external components. The MHL/MyDP path supports the latest MHL Rev. 3.0 specification. Typical on-resistance is 5.5Ω for MHL channels and 4.5Ω for USB channels, with a -3dB bandwidth of 6.5GHz for both paths. Power consumption is typically 28µA, and it includes IOFF protection to prevent current leakage in powered-down states.

Feature Summary

• Integrates a high-speed MHL/MyDP switch and dual USB 2.0 High-Speed switches into a single 1:3 multiplexer configuration.
• Supports overvoltage tolerance on all I/O pins up to 5V without requiring external components.
• Features power-off protection that forces all I/O pins to high impedance mode when power is absent.
• Includes select pins compatible with 1.8V control voltages for direct interfacing with mobile processor GPIOs.

Applications

• PC Motherboards
• Notebooks
• Servers
• Smartphones
• Portable Instrumentation

Procurement Notes

Verify the specific ordering suffix 'ZNEX' against official Diodes Incorporated documentation to confirm the WQFN1818-12 package type and tape-and-reel packaging format. Ensure compatibility with RoHS 3 and halogen-free requirements as defined by the manufacturer's quality standards before finalizing procurement specifications.

Selection Notes

Select this component when board space is constrained and a common connector must support both MHL/MyDP signals and dual USB data lines simultaneously. Verify that the system logic levels align with the 1.8V compatible SEL inputs and that the operating temperature range meets the application's environmental demands.

Part Context

This device belongs to the PI3USB3031 product line from Diodes Incorporated, designed specifically for mobile applications requiring signal multiplexing. It consolidates multiple switching functions into a compact 12-pin WQFN package, enabling designers to reduce footprint and eliminate redundant connectors in portable electronics.

Replacement Considerations

The PI3USB3031XUAEX serves as an alternative variant within the same family, utilizing an X2-QFN1616-12 package instead of the ZN package. Both variants share identical electrical characteristics and functionality; selection depends solely on PCB layout constraints and available footprint dimensions.

FAQ

What is the maximum voltage tolerance for the I/O pins?

All I/O pins feature overvoltage tolerance (OVT) up to 5V without the need for external components.

How does the device handle power-off conditions?

IOFF protection forces all I/O pins into a high-impedance state when VCC is 0V, preventing excessive leakage current and ensuring full signal isolation.

Can the control inputs interface directly with 1.8V logic?

Yes, the SEL0 and SEL1 control inputs are compatible with 1.8V control voltages, allowing direct connection to mobile processor GPIOs without level shifting.